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  • Malbet, F.Université Grenoble Alpes,Grenoble Alpes University (author)

High precision astrometry mission for the detection and characterization of nearby habitable planetary systems with the Nearby Earth Astrometric Telescope (NEAT)

  • Article/chapterEnglish2012

Publisher, publication year, extent ...

  • 2011-09-08
  • Springer Science and Business Media LLC,2012

Numbers

  • LIBRIS-ID:oai:research.chalmers.se:263aca4f-27d1-4468-bf99-af1e756b5d76
  • https://research.chalmers.se/publication/165213URI
  • https://doi.org/10.1007/s10686-011-9246-1DOI
  • https://lup.lub.lu.se/record/3189862URI

Supplementary language notes

  • Language:English
  • Summary in:English

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  • Subject category:art swepub-publicationtype
  • Subject category:ref swepub-contenttype

Notes

  • A complete census of planetary systems around a volume-limited sample of solar-type stars (FGK dwarfs) in the Solar neighborhood (d a parts per thousand currency signaEuro parts per thousand 15 pc) with uniform sensitivity down to Earth-mass planets within their Habitable Zones out to several AUs would be a major milestone in extrasolar planets astrophysics. This fundamental goal can be achieved with a mission concept such as NEAT-the Nearby Earth Astrometric Telescope. NEAT is designed to carry out space-borne extremely-high-precision astrometric measurements at the 0.05 mu as (1 sigma) accuracy level, sufficient to detect dynamical effects due to orbiting planets of mass even lower than Earth's around the nearest stars. Such a survey mission would provide the actual planetary masses and the full orbital geometry for all the components of the detected planetary systems down to the Earth-mass limit. The NEAT performance limits can be achieved by carrying out differential astrometry between the targets and a set of suitable reference stars in the field. The NEAT instrument design consists of an off-axis parabola single-mirror telescope (D = 1 m), a detector with a large field of view located 40 m away from the telescope and made of 8 small movable CCDs located around a fixed central CCD, and an interferometric calibration system monitoring dynamical Young's fringes originating from metrology fibers located at the primary mirror. The mission profile is driven by the fact that the two main modules of the payload, the telescope and the focal plane, must be located 40 m away leading to the choice of a formation flying option as the reference mission, and of a deployable boom option as an alternative choice. The proposed mission architecture relies on the use of two satellites, of about 700 kg each, operating at L2 for 5 years, flying in formation and offering a capability of more than 20,000 reconfigurations. The two satellites will be launched in a stacked configuration using a Soyuz ST launch vehicle. The NEAT primary science program will encompass an astrometric survey of our 200 closest F-, G- and K-type stellar neighbors, with an average of 50 visits each distributed over the nominal mission duration. The main survey operation will use approximately 70% of the mission lifetime. The remaining 30% of NEAT observing time might be allocated, for example, to improve the characterization of the architecture of selected planetary systems around nearby targets of specific interest (low-mass stars, young stars, etc.) discovered by Gaia, ground-based high-precision radial-velocity surveys, and other programs. With its exquisite, surgical astrometric precision, NEAT holds the promise to provide the first thorough census for Earth-mass planets around stars in the immediate vicinity of our Sun.

Subject headings and genre

Added entries (persons, corporate bodies, meetings, titles ...)

  • Leger, A.Université Paris-Sud XI,University of Paris-Sud XI (author)
  • Shao, M. (author)
  • Goullioud, R. (author)
  • Lagage, P. O.Astrophysique, Instrumentation et Modelisation de Paris-Saclay (author)
  • Brown, A. G. A.Universiteit Leiden (UL),Leiden University (UL) (author)
  • Cara, C.Astrophysique, Instrumentation et Modelisation de Paris-Saclay (author)
  • Durand, G.Astrophysique, Instrumentation et Modelisation de Paris-Saclay (author)
  • Eiroa, C.Universidad Autonoma de Madrid (UAM) (author)
  • Feautrier, P.Université Grenoble Alpes,Grenoble Alpes University (author)
  • Jakobsson, B.Swedish Space Corporation (SSC) (author)
  • Hinglais, E.Centre National d'Etudes Spatiales (CNES) (author)
  • Kaltenegger, L.Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG) (author)
  • Labadie, L.Universität zu Köln,University of Cologne (author)
  • Lagrange, A. M.Université Grenoble Alpes,Grenoble Alpes University (author)
  • Laskar, J.IMCCE - Institut de Mecanique Celeste et de Calcul des Ephemerides (author)
  • Liseau, René,1949Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)liseau (author)
  • Lunine, J.Universita degli Studi di Roma Tor Vergata,University of Rome Tor Vergata (author)
  • Maldonado, J.Universidad Autonoma de Madrid (UAM) (author)
  • Mercier, M.Thales Group (author)
  • Mordasini, C.Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG) (author)
  • Queloz, D.Université de Genève,University of Geneva (author)
  • Quirrenbach, A. (author)
  • Sozzetti, A.Osservatorio Astronomico di Torino (author)
  • Traub, W. (author)
  • Absil, O.Universite de Liège,University of Liège (author)
  • Alibert, Y.Universität Bern,University of Bern,Observatoire de Besancon (author)
  • Andrei, A. H.Observatorio Nacional,Osservatorio Astronomico di Torino (author)
  • Arenou, F.Observatoire de Paris-Meudon (author)
  • Beichman, C.California Institute of Technology (Caltech) (author)
  • Chelli, A.Université Grenoble Alpes,Grenoble Alpes University (author)
  • Cockell, C. S.Open University (author)
  • Duvert, G.Université Grenoble Alpes,Grenoble Alpes University (author)
  • Forveille, T.Université Grenoble Alpes,Grenoble Alpes University (author)
  • Garcia, P. J. V.Universidade do Porto,University of Porto (author)
  • Hobbs, DavidLund University,Lunds universitet,Astronomi - Genomgår omorganisation,Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation,Naturvetenskapliga fakulteten,Lund Observatory - Undergoing reorganization,Department of Astronomy and Theoretical Physics - Undergoing reorganization,Faculty of Science(Swepub:lu)astr-dho (author)
  • Krone-Martins, A.Laboratoire d'Astrophysique de Bordeaux,Universidade Cidade de Sao Paulo (author)
  • Lammer, H. (author)
  • Meunier, N.Université Grenoble Alpes,Grenoble Alpes University (author)
  • Minardi, S.Friedrich-Schiller-Universität Jena,Friedrich Schiller University Jena (author)
  • de Almeida, A. M.Universidade de Lisboa,University of Lisbon (author)
  • Rambaux, N.IMCCE - Institut de Mecanique Celeste et de Calcul des Ephemerides (author)
  • Raymond, S.Laboratoire d'Astrophysique de Bordeaux (author)
  • Rottgering, H.Universiteit Leiden (UL),Leiden University (UL) (author)
  • Sahlmann, J.Université de Genève,University of Geneva (author)
  • Schuller, P. A. (author)
  • Segransan, D.Université de Genève,University of Geneva (author)
  • Selsis, F.Laboratoire d'Astrophysique de Bordeaux (author)
  • Surdej, J.Universite de Liège,University of Liège (author)
  • Villaver, E.Universidad Autonoma de Madrid (UAM) (author)
  • White, G. J.STFC Rutherford Appleton Laboratory,Open University (author)
  • Zinnecker, H.Universität Stuttgart,University of Stuttgart,NASA Ames Research Center (author)
  • Université Grenoble AlpesUniversité Paris-Sud XI (creator_code:org_t)

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  • In:Experimental Astronomy: Springer Science and Business Media LLC34:2, s. 385-4130922-64351572-9508

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